Yarn measuring machine



4 Sheets-Sheet 1 ATTO RN I T w R m. cm W B u E N o E .7--- a {1- V mm! o mw fii N K R11]. 1 Ea. R a x J r l/ O 1.. m QR ww M Q m {w 91113;... m m o w o .mw.

y 1951 J. K. COBERT YARN MEASURING MACHINE Filed March 26, 1945 July 3, 1951 .1. K. COBERT YARN MEASURING MACHINE 4 Sheets-Sheet, 2

Filed March 26, 1945 3m g T M \smm Q3. 8.3 m w A mvmrfi we 4w i Q s No mm m5 m mm, N S. Q Q. E M 5 E W f. ea mzrm 3m mm m am as BE j H? QM Wm 4 Sheets-Sheet 4 J. K. COBERT YARN MEASURING MACHINE July 3, 1951 Filed March 26, 1945 \NVENTOR J.K.COB E RT ATTORNEYS Patented July 3, 1951 UNITED STATES PATENT OFFICE 6 Claims.

This invention relates to a yarn measuring machine and the object is to provide an accurate and reliable machine embodying intermittently operating yarn measuring means past which the yarn is moved in a step-by-step manner, the measuring means being timed to operate when the yarn is at rest and serving to measure and indicate the denier at various points along the length of the yarn.

According to the preferred embodiment of this invention the yarn is passed between stationary and movable yarn compressing elements from a supply spool to a re-winding spool which is intermittently rotated to wind the yarn thereon, the yarn being thus caused to move in a step-bystep manner past the yarn compressing elements. The movable yarn compressing element is intermittently moved toward and away from the stationar yarn compressing element so that the yarn is subjected to a constant predetermined compression pressure each time it comes to rest following an advancing movement thereof. The force acting on the movable yarn compressing element to move it toward the stationary yarn compressing element to thereby effect compression of the yarn between these elements is a constant force of predetermined magnitude. This force is applied to the movable yarn compressing element so that the distance travelled by said element during each yarn compressing movement thereof varies according to the denier of that portion of the yarn which is compressed between the yarn compressing elements. In other words, when the portion of the yarn interposed between the yarn compressing elements during the measuring operation is of minimum denier, the constant yarn compressing force acting on the movable yarn compressing element is effective to advance said element to a point substantially beyond the point to which said element is advanced by said force when the portion of the yarn interposed between said element is of maximum denier The denier of the portion of the yarn compressed between the yarn compressing elements during each measuring operation is indicated by a pointer which is automatically moved over a calibrated scale to an indicating position which is predetermined by and dependent on the point to which the movable yarn compressing element is advanced during its yarn compressing movement.

Proceeding now to a more detailed description of this invention reference will be had to the accompanying drawings, in WhlCh.

Fig. 1 is a top plan view of a yarn measuring machine made in accordance with my invention.

Fig. 2 is a side view of the machine as it appears to an observer looking in the direction indicated by the arrow X in Fig. 1.

Fig. 3 is a side view of the machine as it appears to an observer looking in the direction indicated by the arrow X in Fig. 1.

Fig. 4 is an end view of the machine as it appears to an observer looking in the direction indicated by the arrow X in Figs. 2 and 3.

Fig. 5 is a side view showing the two yarn compressing elements in their assembled relation. In this view the movable yarn compressing element is shown in the position which it occupies relatively to the stationary yarn compressing element when said movable yarn compressing element has been advanced to the furthest point to which it is movable by the force applied thereto.

Fig. 6 is a view similar to Fig. 5 but showing the movable yarn compressing element in a different position as compared with Fig. 5.

Fig, 7 is an enlarged view showing the overlapping yarn compressing strips of the yarn compressing elements as these strips appear when occupying the position shown in Fig. 6.

Fig. 8 is a transverse sectional view through the top portion of the main frame of the machine and through one of the holes in which the yarn compressing elements are mounted.

Figs. 9 to 12 inclusive are detail views showing a modified arrangement of the component yarn compressing strips of the relatively movable yarn compressing elements.

In these drawings the yarn being measured is indicated at 5 and is shown passing from a free-running supply. spool 6 to an intermittently operated re-winding spool l.

. at one end of the machine.

The spool 6 (see Figs. 1, 2 and 3) is carried by a freel rotatable supporting shaft 8 removably journalled in bearing slots 9 provided in shaft-supporting arms l0 extending outwardly from the main frame II The spool l is carried by a shaft l2 removably journalled in shaftsupporting arms I3 extending outwardly from the frame I l at the opposite end of the machine.

' One end of spool shaft l2 extends through a cirsupporting arm I3. The last mentioned arm'l3 carries a pivoted shaft retaining latch 16 which is shaped to fit over shaft I2 to retain it in the slot 15. Latch i6 is mounted to swing about a .erally indicated at 44 in Fig. 1. brake may be of any suitable or conventional type h but is here shown as comprising a spring actuated lease the braking pressure on spool 1.

pivotal axis I! to either a shaft retaining or shaft releasing position and is yieldingly held in its shaft retaining position by a suitable biasing spring i8.

Spool 1 and shaft l2 are intermittently rotated in a yarn winding direction by mechanism including a substantially vertical ratchet-bar l9 engaging a ratchet wheel 20 carried by an enlarged portion 2| of the shaft l2 located between latch l6 and the adjacent end of spool l. The lower end of ratchet-bar I9 is pivoted to one end of a cam operated lever 22 as indicated at 24 and carries a stop pin 25 working in a slightly elongated slot 26. The ratchet-bar |9 is yieldingly urged toward the ratchet wheel 20 by a spring projected plunger 26' working in a plunger casing 21 carried by lever 22. The remaining end of lever 22 is mounted to swing about a pivot 28 carried by the adjacent side member of frame II.

A roller 29 is attached to an intermediate portionof lever 22 and rides the periphery of a lever operating cam 30 fixed to a cam shaft 3| journalled in bearings 32 carried by the side members a 33 and 34 of frame A cam disc 35 is fixed to a projecting end of cam shaft 3| and is equipped with a crank handle 36 whereby said shaft and disc may be turned by hand. Lever 22 is held in contact with its operating cam 30 by downward pressure exerted thereon through the agency of a spring device generally indicated at 38 in Fig. 4.

This spring device comprises a plunger 39 which During each complete revolution of crank shaft 3| the lever 22 and ratchet-bar I9 are raised and lowered by the cam 30 and the cooperating spring device 38. ratchet-bar l9 drives the ratchet wheel 20 to rotate shaft l2 and spool 1 in a arn winding di- Durin its upward movement the rection. During its downward movement the ratchet-bar |9 slips past the ratchet wheel 20 without turning the spool 1. In this connection it is pointed out that spool is held against casual turning movement by a friction brake gen- This friction plunger 45 which is yieldingly held against one supporting arms [3. The plunger 45 extends entirely through the housing 46 so that its outer end 4! is accessible for manual retraction to re- The engagin teeth of ratchet bar I9 and ratchet wheel 20 are shaped so that the ratchet bar is effective to rotate the ratchet wheel against the resistance 'of the braking pressure on spool only during upward movement of the ratchet bar.

The stationary and movable yarn compressing elements between which the yarn passes during its travel from spool 6 to spool l are generally indicated at 50 and in Figs. 1, 2, 5, 6 and '7.

" Each of these elements consists essentiall of a 8, inclusive) with their longitudinal axes extending horizontally and their engaging side surfaces lying in vertical planes. Strips 52 of each element are longer than the companion strips. 53 and are assembled with the latter so that the yarnengaging ends of the strips 52 project beyond the corresponding ends of the strips 53. These projecting yarn-engaging ends of the longer strips 52 of each element are laterally separated from each other by the interposed shorter spacing strips 53 and are formed with substantially V-shaped yarn receiving notches 54. The two yarn compressing elements 50 and 5| are arranged so that, in all relative positions thereof, the notched yarnengaging ends of the strips 52 of each element fit between and overlap the corresponding ends of the strips 52 of the companion element. This will be clearly understood from the showing of Figs. 5 to 8 inclusive.

The strips 52 and 53 of the stationary yarn compressing element 5|] are mounted on one end of the top frame member 40 in a suitable box-like holder comprising side walls 56 and 5'! and a bottom wall 58. The strips 52 and 53 of element 50 are thus held against lateral separation thereof and, in order to prevent longitudinal displacement of these strips, they are each provided with vertical extensions 60 which extend upwardly between and in contact with the opposing edges 6| of plates 63 and 64 which extend across the top of the box-like holder and are secured to the side walls 53 and 57 by screws 66. The holder containing the yarn compressing strips of element 50 is fitted in a channel 68 provided in the upper surface of the top frame member 4!). This holder is located at one end of the top frame member 40 and is secured in place in the channel 53 so that it remains stationary at all times.

The yarn compressing strips of the yarn compressing element 5| are contained in a movable box-like holder 10 similar tothat previously described. This holder 10 (see Fig. 8) comprises side walls H and a bottom wall 12, the latter equipped with balls 13 running on tracks 74 arranged in the bottom of the channel 58. The strips 52 and 53 of element 5| are also formed with vertical extensions 76 which extend upwardly between top plates 11 and 18 which are fastened by screws 19 to the side walls H of holder 10.

From the foregoing it will be seen that, in reality, each of the yarn compressin elements 50 and 5| comprises the strips 52 and 53 and the box-like holder in which these strips are arranged to prevent relative displacement thereof.

As previously stated, the elements 50 and 5| are arranged so that, at all times, the laterally separated notched ends of the long strips 52 of each element fit between and overlap the corresponding ends of the long strips 52 of the component element. However, since element 5| is mounted for movement toward and away from element 50 it will be seen that the extent to which the notched yarn engaging strips of the two elements overlap will depend upon the point to which element 5| is advanced during its movement toward element 50.

In Figs. 6 and 7 elements 53 and 5| are shown in the relative positions which they occupy prior to a yarn compressing and measuring operation. It will be noted that, in this position of the two elements theapices of the V-shaped notches 5d of the strips 52 of element 53 form with the apices of the V-shaped notches54 of the strips 52 of element/5| the defining walls of openings 8| through which the yarn 5 passes from the spool 6 to the spool When the. element 53 is advanced from the position shown in Figs. 6 and 7 toward the position shown in Fig. 5 the yarn is compressed bepressing elements 50 and 5|.

' tween the V-shaped ends of the two sets of strips 52 in such manner that the compression pressure is applied all around the circumference of the yarn. In practice the apices of the notched portions 54 of the two sets of strips 52 may be rounded so that the pressure of these strips will be applied to the yarn in such a manner as to retain the circular shape of the yarn. As hereinafter described the yarn compressing element 5| is moved toward the companion element 58 by the application of a force of constant magnitude so that the point to which this force is effective to advance element 5| from the retracted position shown in Figs. 6 and '7 will de pend on the denier of the portion of the yarn which is subjected to compression between the notched strips of elements 5| and 52.

The application of a force of constant magnitude to the element 5| to move it in a yarncompressing direction is accomplished through the agency of a weight carrier 83 mounted to swing about a pivot 84 located at one end of the top frame member 40. This weight carrier is equipped with a pressure applying ball 84' which bears against the adjacent end of the movable holder III which carries the yarn compressing strips of element 5|. A beam 85a is attached to and projects beyond the weight carrier 33 so that it overhangs the element 5|. A weight 83 is slidably arranged on the beam 85a and may be secured in any adjusted position by a set screw 3'1. The weight carrier 83 is provided with an arm 88 carrying a roller 89 which rides an annular cam 90 formed on the cam disk 35. When the high portion of cam 90 is in contact with roller 89 the weight carrier 83 and weight supporting beam 85a are held in the dotted line position shown in Fig. 4 and the movable holder I0 of ele- 1 ment 5| is held in a retracted position against 1 the ball 84 by means of a spring device 92 conr nected between the weight carrier 83 and a bracket 93 rising from the top plate "I8 of said holder or carriage. In this position of the holder or carriage "ID of element 5| the position of the yarn compressing strips 52 of this element in relation to the corresponding strips of element 50 will be substantially as shown in Fig. 7 so that the notched ends of the two sets of strips 52 conjointly define the aforesaid opening 8| through which the yarn is passed from spool 6 to spool I.

When cam plate is rotated to move the low portion 95 of cam 90 into engagement with roller 89, the weight carrier 83 is permitted to swing about its pivot 84 under the influence of the weight 86 which exerts a turning force of substantially constant magnitude on the weight carrier.

I thus advanced by the force applied through the agency of weight 86 and weight carrier 83 will depend on the denier of the portion of the yarn interposed between the notched yarn compressing ends of the strips 52 of the two yarn com- This enables the denier of the portion of the yarn compressed between the elements 50 and 5| to be measured as a function of the distance which the holder or carriage I0 of element 5| is advanced by movement of the weight carrier 83 under the influence of the force applying weight 86.

In the present instance the arrangement shown for measuring the denier of the portion of the yarn which is compressed between the yarn compressing strips 52 of the yarn compressing elements and 5| includes a pointer 01 having one end arranged to travel over a suitable calibrated scale 98 carried by a scale plate 99 which is supported from the frame II by a suitable bracket arm I00. The scale plate 99 carries a stop I0| against which the adjacent end of the pointer 91 bears when the pointer is in its starting position.

The remaining end of pointer 91 is mounted to swing about a pivot post 9111 having its lower end supported by a plate I02 and its upper end supported by a bracket I03 carried by said plate. The plate I02 may conveniently be formed as an integral extension of the cover plate 63 of the box-like holder containing the strips 52 and 53 of the stationary yarn compressing element 50. The pointer 9'! is connected to one end of an operating lever I05 by means of an adjustable coupling link I06. This coupling link is provided with a ball end I0! which is fitted in a ball socket I08 carried by the pointer 91 and with a second ball end I09 which is fitted in a ball socket ||0 carried by the pointer operating lever I05. The ball socket I08 of pointer 91 is preferably located close to the pivot post 91a.

The end of lever I05 remote from ball socket H0 is mounted to swing about a pivot post ||2 having its lower end supported by top plate 64 of the holder containing the yarn compressing strips of element 50, the upper end of said pivot post being supported by a bracket I|3 carried by said plate 54.

The pointer 91 is normally biased to swing in a clockwise direction (Fig. 1) over the scale plate 99 by weight actuated biasing means including a flexible element II5 having one end secured to an anchoring member I I6 carried by the pointer 97 and the other end secured to one end of a weight carrying arm III, the intermediate portion of said flexible element being trained around a pulley I I8 journalled in a suitable bracket II9 carried by one of the spool shaft-supporting arms ID. The weight carrying arm H1 is pivoted at |2| to a suitable pivot carrying bracket I22 attached to the side member 33 of frame II. A weight I23 is slidably arranged on the weight carrying arm I I1 and may be secured in adjusted position by a suitable set screw I24. The maximum distance travelled by the pointer 91 when moving under the influence of the biasing weight I23 is controlled by an adjustable stop screw I26 carried by a bracket I2'I attached to the pointer supporting plate I02.

It may be explained here that, in the normal operation of the measuring machine, the pointer 91 does not move far enough to engage the stop screw I26. The main purpose of this stop screw is to prevent the pointer swinging beyond the right hand end of the scale plate 99 when, through partial dismantling of the machine or otherwise, the other pointer stop means hereinafter referred to are removed or rendered inoperative.

The pointer 91 is normally held in its starting position at the left hand end of scale plate 99 (Fig. 1) by means of a slidably mounted pointerrestoring member I30 which acts against the pointer operating lever I05. The pointer-restoring member I30 is arranged to slide through a cam disc 35. cam I35 by a spring I31 having one end anchored r sesame suitable guide I3| and has one end I32 arranged to push against the pointer actuating lever I05 when the pointer-restoring member I30 is moved to the left as viewed in Fig. 1. The end of the pointer-restoring member I30 remote from the pointer operating lever I05 is equipped with a roller I34 which rides a cam I35 formed on the The roller I34 is held against the to a member I33 carried by the pointer-restoring "element I39 and the other end anchored to a member I39 carried by guide I3I. When the cam disc 35 is rotated to engage the high portion of cam I35 with roller I34 the pointer-restoring element I39 is shifted to the left as viewed in Fig. 1

'and acts against the pointer operating lever I05 to swing the pointer 91 to its starting position at the left hand end of the scale 99. At this point it may be explained that in using the machine described herein the cam disc 35 is initially turned to a position such that the cams 90 and I35 act against the rollers 39 and I34 to hold the weight carrier 83 and the pointer 91 in their starting positions. The starting position of the weight carrier 83 is that indicated by dotted lines in Fig. 4 and, in this position of the weight carrier, the yarn compressing element 5| is retracted to its starting position in which'the notched ends 54 of the strips 52 of this element occupy in relation to the notched ends 54 of the strips 52 of element 50 the position indicated in Fig. '1. The starting position of the pointer 91 is, as previously stated, at the left hand end of the dial plate 99.

Assuming the element 5| and the pointer 91 to be in the above mentioned starting positions, the cam disc 35 is turned through a complete revolution. The cams 90 and I35 are designed so that, during said revolution of the cam disc 35, the low point 95 of cam 99 is rotated into contact with the roller 89 thus permitting the weight 80 and weight carrier 83 to move the yarn compressing element 5| toward the yarn compressing element 50 to thereby compress the portion of the yarn 5 interposed between the notches 54 of the V opposing yarn compressing strips 52. The distance which element 5| travels during its yarn compressing operation will depend on the denier of the yarn interposed between the notched ends of the two sets of yarn compressing strips 52. Shortly after the element 5| has reached the farthest point to which the weight 86 is effective to move the same, the low portion of the cam I35 is rotated into contact with the roller I34, thus permitting the spring I31 to shift the pointerrestoring element I33 to the right thereby permitting the pointer actuating lever I95 and the pointer 91 to move to the right under the influence of the biasing weight I23. During this movement of the pointer 91 to the right the element 5| is still held in its advanced position by the weight 85 and Weight carrier 83. The pointer actuating lever I05 and the pointer 91 continue to swing to the right until further movement of lever I05 is arrested by engagement with an adjustable stop I4I carried by and movable with the yarn compressing element 5|. As will be readily understood th position to which the stop MI is advanced during movement of the yarn compressing element 5| under the influence of weight 36 will vary according to the denier of the yarn interposed between the yarn compressing strips 52 of the yarn compressing elements 50 and 5|. Consequently, the distance which the pointer 91 travels to the right over the scale plate 99 before its further movement is 8 arrested by engagement of the pointer operating lever I05 with the stop MI is directly controlled by the denier of the yarn being compressed between the yarn compressing strips 52 of elements and 5|.

The adjustable stop |4I could, if desired, be rigidly attached to a part of the element 5|. However, I prefer to arrange the adjustable stop I4I on one end of a bar I42 having its opposite end pivoted, as at I44, to the cover plate 11 of element 5|. The bar I42 carries a laterally projecting pin I46 which rides the inclined surface I41 of .a cam plate I48. When the element .5I is retracted to its starting position by the cam 90 and spring connection 92 the bar I42 moves to the right with element 5| and, in so doing, is swung in an anticlockwise direction (Fig. 51) by engagement of the pin I46 with the cam incline I41, this lateral movement of the bar I42 being resisted by a spring E50 which is connected between said bar and an anchorage point on the top member 40 of the frame. Should the denier of the yarn be such that the yarn compressing movement of element 5| is stopped before .it reaches the position shown in Fig. 1, "the pin I43 will be engaged by a higher portion of the cam I41 so that the stop carrying arm 42 will be held in a position at an angle to that shown in Fig. 1 and the stop .I4I will be positioned to retard the time of contact between said stop and pointer operating lever I05.

Shortly after the indicating movement of the pointer 91 is arrested by the stop I4| the cams 90 and I35 operate to restore element 5| and pointer 91 to their starting positions. Following this and during the same revolution of cam plate 35 the cam 30 on shaft 3| operates the lever .23 and ratchet-bar I9 to eifect a predetermined turning movement of spool 1 in a yarn winding direction, thus causing a new length of the yarn '5 to be drawn into place between the yarn compressing elements 59 and 5| for the next measuring operation.

The end of shaft 3| remote from cam disc 35 carries a disc I53 provided with a V-shaped notch I54 in which the V-shaped end I55 of a spring projectedplunger I56 is received each time the shaft 3| completes a full revolution. Plunger I56 is mounted in a casing I51 containing a plunger projecting spring I58.

When the machine described herein is used for measuring very fine yarns the accuracy thereof may be improved by substituting for the previously described yarn compressing means the modified yarn compressing means shown in Figs. 9 to 12 inclusive. The modified yarn compressing means comprises two groups of thin metal strips 52a which are used in place of the previously described strips '52 and 53. The strips 52a of each group are of the same overall length and are provided with straight diagonally inclined yarn-engaging end edges 52b. The inclined end edge 52b of each strip is oppositely inclined with respect to the inclination of the corresponding end edge of the next adjacent strip or strips contained in the same group. In this connection it will be noted that the inclined end edges of adjacent strips in the same group conjointly provide the sides of a V. It willalso be noted that the yarn-engaging ends of the component strips of each group overlap the corresponding ends of the component strips of the companion group as clearly shown in Fig. 12. It will also be noted that the strips of each group are in flat engagement with each other thereby eliminating the previously described spacers 53.

Having thus described what I now conceive to be the preferred embodiment of this invention it will be understood that various modifications may be resorted to within the scope and spirit of the invention as defined by the appended claims.

I claim:

1. In yarn measuring apparatus of the character described, a frame structure, opposed stationary and movable yarn compressing elements mounted on said frame structure, each element comprising a holder including bottom and side walls and top plates extending between and secured to the side walls with the inner edges of the plates spaced apart to define an intervening slot and a group of thin yarn-engaging strips arranged in side by side relation in the holder in direct contact with each other and with the side walls of the holder, each strip being provided with a projection extending upwardly through said slot and being also provided, at its inner end, with a yarn-engaging face complementary to an opposing yarn-engaging end face of the corresponding strip of the opposing yarn compressing element.

2. Yarn measuring apparatus as set forth in claim 1, including means for moving the movable yarn compressing element to a yarn compressing position in the direction of the stationary yarn compressing element and then moving the movable yarn compressing element to a yarn releasing position away from the stationary yarn compressing element, a stop member carried by the holder of said movable yarn compressing element, a scale plate, a pointer arranged to travel over said scale plate from a starting position to an indicating position predetermined by the position to which said stop is advanced by the yarn compressing movement of said movable yarn compressing element, a member attached to and movable with said pointer in the path of said stop and engageable with said stop to predetermine the indicating position to which the pointer is moved in accordance with the position to which the stop has been advanced when engaged by said member, biasing means normally tending to move the pointer over the scale plate from a starting to an indicating position, and pointer controlling means operable to retain the pointer in its starting position during movement of the movable yarn compressing element to its yarn compressing position and to release the pointer for movement to an indicating position under the influence of said biasing means when the movable yarn compressing element has reached the end of its travel in a yarn compressing direction.

3. Yarn measuring apparatus as set forth in claim 1, including a rotatable shaft, a pair of cams carried by and rotatable with said shaft, means controlled by one of said cams for shifting the movable yarn compressing element to a yarn compressing position in the direction of the stationary yarn compressing element and then shifting the movable yarn compressing element to a yarn releasing position away from the stationary yarn compressing element, a stop member carried by the holder of said movable yarn compressing element, a scale plate, a pointer arranged to travel over said scale plate from a starting position to an indicating position which is predetermined by the position to which said stop member has been advanced at the end of the yarn compressing movement of the movable yarn compressing element, a member attached to and movable with said pointer in the path of said stop and engageable with the stop to predetermine the indicating position to which the pointer is moved in accordance with the position to which said stop member is advanced at the end of 'the yarn compressing movement of the movable yarn J compressing element, biasing means normally tending to move the pointer over the scale plate from a starting to an indicating position and pointer controlling means operable to retain the pointer in its starting position during movement of the movable yarn compressing element to its I yarn compressing position and to release the pointer for movement to an indicating position under the influence of said biasing means when the movable yarn compressing element has reached the end of its travel in a yarn compressing direction, said last mentioned means being controlled and actuated by the other of said cams.

4. Yarn measuring apparatus comprising opposed stationary and movable yarn compressing elements between which the yarn is pressed during each measuring operation, force applying means arranged to shift the movable yarn compressing element to a yarn compressing posi-- tion in the direction of the stationary yarn compressing element by the application of a force of predetermined constant magnitude so that the distance travelled by said movable yarn compressing element during each yarn compressing movement thereof varies according to the denier of that portion of the yarn which is interposed a scale plate, a pointer arranged to travel over 7 the scale plate and means for operating and controlling the pointer so that it is held in a starting position during the yarn compressing operation, is moved over the scale plate at the end of the yarn compressing operation to an indicating position which i predetermined by the position to which said stop member has been moved at the end of the yarn compressing operation and is returned to starting position simultaneously with the movement of the movable yarn compressing element to its yarn releasing position, said last mentioned mean including biasing means acting against the pointer to move it from its starting position to an indicating position, means for holding the pointer in its starting position against the resistance of said biasing means during the yarn compressing operation and means for rendering said holding means ineffective upon completion of the yarn compressing operation to thereby release the pointer for movement to an indicating position under the influence of the biasing means and a member attached to and movable with the pointer and engageable with said stop member to bring the pointer to rest when it has travelled a distance predetermined by the position of the stop member at the end of the yarn compressing operation.

5. Yarn measuring apparatus comprising stationary and movable yarn compressing elements, means for shifting the movable yarn compressing element to a yarn compressing position in the direction of the stationary yarn compressing element, means for shifting the movable yarn compressing element to a yarn releasing. position away from the stationary yarn compressing element when the yarn compressing operation is completed, a stop member. carried by and movable with the movable yarn compressing element, a scale. plate, a pointer mounted to swing about a pivotal axis located at one end thereofanding; against the pointer to move it over the scale plate from its starting position toan indicating position, alever having one end mounted to swing about a pivotal axis and having the other end attached to the pointer, said lever being engageable with said stop member to predetermine, inaccordance with the position of thestop member at the end of the yarn compressing operation,' the indicating point to which the pointer is moved over the scale plate, a movable pointer resetting member engaging said lever, means operable during the yarncompressing operation to maintain the' pointer resetting member in a position'w-here it acts against said lever to hold the pointer in its starting position against the resistance of said biasing means, said lastdefined means being operable, upon completion of the yarn compressing operation, to effect shifting of the pointer resetting member in a direction away from said lever whereby the pointer is released to move to an indicating position under the influence of said biasing means.

6. Yarn measuring. apparatus com-prisingstationary and. movable yarncompressing elements, a pivotally mounted member bearing against and connected to the movable yarn compressing element, biasing means acting against said member to swing it about its pivotal axis. in one direction to thereby shift the movable yarn compressing element to a yarn compressing position in the direction of the stationary yarn compressing element, a rotatable shaft, a cam carried by said shaft and engaging apart of said.

member, said cam operating during, a part of each revolution of the shaft to swing said member in the opposite direction about its pivotal axis to thereby shift the movable yarn compressing element to a yarn releasing position away from the stationary yarn compressing element and against the resistance of said biasing means, a stop member carried by and movable with the movable yarn compressing element, an indicating pointer, biasing means acting against the pointer to move it from a starting to an indicating position and means whereby said pointer is held against movement under the influence of the pointer biasing means during the yarn compressing operation and is released to move under the influence of said biasing means upon completion of the yarn compressing operation, said last mentioned means including a second cam on said shaft, a lever attached to and movable with said pointer and engageable with said stop and a slidably mounted pointer resetting member arranged With one end acting against said lever and the other end acting against said last mentioned cam.

JOSEPH K. COBERT.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 805,912 Herzog Nov. 28, 1905 1,593,012 Bryant July 20, 1926 1,849,055 Cropper Mar. 15, 1932 2,055,785 Crowther Sept. 29, 1936 2,187,790 Leavenworth Jan. 23, 1940 2,288,534 Lower June 30, 1942 2,322,954 Pemborke June 29, 1943 2,362,203 Horton et a1. Nov. 7, 1944 2,376,556 Ruan May" 22, 1945 FOREIGN PATENTS Number Country Date 164,575 Switzerland Oct. 15, 1933 

